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Finding the Fourth Proportional to 104,620.40, 156,930.60 and 73,127.60

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Solution

The fourth proportional to 104,620.40, 156,930.60 and 73,127.60 is: 109,691.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,620.40 : 156,930.60 = 73,127.60 : x
  2. Step 2: Convert to fraction form
    104,620.40/156,930.60 = 73,127.60/x
  3. Step 3: Cross multiply
    104,620.40x = 156,930.60 × 73,127.60
  4. Step 4: Simplify right side
    104,620.40x = 11,475,958,144.56
  5. Step 5: Solve for x
    x = 11,475,958,144.56/104,620.40
  6. Step 6: Final answer
    x = 109,691.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.